Compound Interest Calculator
See how your savings grow with compound interest and monthly contributions — full year-by-year breakdown.
- Runs in your browser
- No upload on server
- Free, forever
- Enter values
- See result
- Copy or share
Compounding frequency
Future value
After 10 years
$20,514
You contributed
$13,000
Interest earned
$7,514
Year-by-year breakdown
| Year | Balance | Contributed | Interest |
|---|---|---|---|
| 1 | $2,328 | $2,200 | $128 |
| 2 | $3,766 | $3,400 | $366 |
| 3 | $5,324 | $4,600 | $724 |
| 4 | $7,011 | $5,800 | $1,211 |
| 5 | $8,838 | $7,000 | $1,838 |
| 6 | $10,816 | $8,200 | $2,616 |
| 7 | $12,959 | $9,400 | $3,559 |
| 8 | $15,279 | $10,600 | $4,679 |
| 9 | $17,792 | $11,800 | $5,992 |
| 10 | $20,514 | $13,000 | $7,514 |
How this works — and why it's private
- Enter your starting amount and a monthly contribution.
- Type an annual interest rate and how long you'll save.
- Pick how often interest compounds — monthly is most common.
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